Joseph brakeley



UNITED sTA'TEs PATENT onrioE.

JOSEPH BRAKELEY, or `vEw roux, N.

MACHINE FOR PLANING BARK.

Specification of Letters Patent No. 31,697, dated March 19, 1861.

To all lwhom it may concern:

Be it known that I, JOSEPH BRAKELEY, of the city, county, and State of New York, have invented a new and Improved Machine for Cutting Bark rfor the Use of Tanners; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to thel annexed drawings, making a part of this specification, in which- Figure l, is a side sectional view of my invention taken in the line :zz-m Fig. 2. Fig. 2, a transverse vertical section of the same, taken in the line y-y, Fig. l, and looking in the direction indicated by the arrows( Similar letters of reference indicate corresponding parts in the two gures. 4

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A represents an oblong rectangular box, which is formed of two longitudinal parts a, b, connected together by parallel bars B, which are secured to the parts a, b, by pivots c. This manner of attaching the parts a, together admits of the upper part a, being adjusted higher or lower so as to be nearer to or farther from the part b, and one of the bars B, is longer than the others in order to serve as Y a handle, as shown at B', said handle having a hole init to fit on either of a series of pins d, and secure the part a, in the desired position, see Fig. l.

In the upper part a, of the box A, there is placed a cylinder C, which has a series of knives e, attached to its periphery. These knives extend the whole length of cylinder C, and they have a tangential position relatively with the periphery of the cylinder as shown in Fig. 1.

Within the part a, of the box A, there is placed a horizontal bed D, which rests on parallel bars 7", the lower ends of which are attached by pivots to the part a. One of the bars f', is longer than the others to serve as a handle and it has a hole made in it to lit over any of a series of pins g, to secure the bed D in the desired position relatively with l cylinder C, according to the depth `of cut required.

Inthe part b, of the box A, there is placed a cylinder E, the axis of which is about in a horizontal plane with the axis of the cylinder C, as shown in Fig. 1. To` admit of this the end of the part containing cylinder E, extends upward and fits in a concave in the under side of part a. The cylinder E, is provided with knives 71., similar to those of cylinder C, and within the part a, there is placed a `horizontal bed F, which bed is vbetween the two cylinders C, E, as shown clearly in Fig. l, the bed F, being on a line with the edges of the knives c, of cylinder C.

G, G, are luted pressure rollers, the axes of which are placed in the ends of arms H. These arms H, are placed on a shaft I, and they have springs z', connected to them. To one end of the axes of the rollers G, pulleys J, are attached, and to one end of the axes of the cylinders C, E, there are attached pulleys j. Suitable belts pass around the pulleys above named to communicate motion ,to them.

The operation is as follows: The bark to be cut is placed one slab at a time on the bed D, the ross or outer side being upward, and motion is given the cylinders and rollers by any convenient power, the i cylinders and rollers rotating in the direction indicated by the arrows in Fig. l. The inner part 7c, of the bark is cut by the cylinder C, the cut portion passing down from the machine as shown in Fig. l. The depth of this cut is regulated according to the thickness of part c, by adjusting the bed D. The rollers G, G, vfeed the bark along and the bark passes from bed D, to the bed F, the diiference in height between the two beds being equal to the depth of the cut of the knives e. The bark then in passing over the cylinder E, has its second part or portion Z, cut from it, said part being dis* charged from the machine as shown in Fig.

'1. The remaining outside layer technically termed the ross and designated by m, is discharged at the end of the machine, as also shown in Fig. l. The `depth of the cut of cylinder E, is regulated according to the thickness of the part Z, of the back by ad justing the whole of the part a, of the box A, through the medium of the bars B. This adjustment ot' part a, of course admits of the regulating of the bed F, relatively with the cylinder E, while the relative position of the cylinder C, with its bed D, is not1 affected thereby.

The bed D, it will be observed is hung upon arms f, whose axes and length are so arranged and proportioned that the inner edge or extremity of the said bed, will, when said bed is adjusted, move on a concentric or circular. line, corresponding with the periphery of the cylinder C. Thus the proper relative distance or throat space between the cutters of cylinder C, and the beds D is maintained vwhatever may be the adjustment of the said bed. The bed F has a similar concentric adjustment in respect to the cylinder E.

This machine admits of a very ready adjustment of the beds to suit the thickness of the two parts of the bark, and said parts may be not only kept separate but also divided with the greatest nicety the latter result being due to the manner in which the beds are adjusted. This is an important i feature for the inner part le, is far more valuable than'the part l, for tanning While the ross is comparatively worthless.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is,

1. The combination with each other and with the feed rollers G, G, of the adjustable beds D, F, and cutting cylinders C, E in the manner and for the purposes substantially as herein shown and described.

2. In bark mills, having the bed or beds on which the bark is placed concentrically adjustable in respect to the periphery of the cutting cylinder substantlally as herein shown and described.

JOSEPH BRAKELEY.

Witnesses:

CHAs. W. Cow'rAN, JAMES LAIRD. 

